wallace



(No Model.) 2, Sheets-Sheet 1.

J. B. WALLACE.

VAPOR STOVE.

No. 403,568. Patented May 21, 1889.

j "11L B (No Model.) 2 Sheets-Sheet 2. J. B. WALLACE.

VAPOR STOVE.

No. 403,568. Patented May 21, 1889.

Ill

M. VA aw.

UNITED STATES PATENT OFFICE.

JACOB BENNETT ALLACE, OF CHICAGO, ILLINOIS, ASSIGNOR TO GEORGE M. CLARK & COMPANY OF SAME PLACE.

VAPOR-STOVE.

SPECIFICATION forming part of Letters Patent No. 403,568, dated May 21, 1889.

Serial No. 272,248. (No model.)

To all whom it may concern.-

Be it known that I, JACOB BENNETT WAL- LACE, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Vapor-Stoves, of which the following is a specification.

This invention relates to generating vaporburners fo1'vapor-stoves,tl1e principal object IO thereof being to render the same safe against leakage of oil should the attendant overlook shutting all the vapor-valves when she ceases to use the stove.

The nature of my improvements is fully disclosed in the following specification.

In the drawings, Figure 1 is an elevation of my improved burner. Fig. 2 is a plan thereof with the burner top or cap removed. Figs. 3 and 4: are sections upon the lines 3 3 2e and 4 a, respectively, of Fig. 2. Fig. 5 is a vertical section, similar to Fig. 3, upon a plane parallel to said line 3 3. Fig. 6 is a section on the line 6 0 of Fig. 1. Figs. 3 and 4. are enlarged.

2 5 In said drawings, A represents the stand or feed pipe supplying oil to the burner; B, the generator where the oil is vaporized, and C the cushioning-chamber, the pipe and generator being connected by the passage a a, and

0 the generator and chamber being connected by the conduit or passage 1). A valve, D, whose stem is shown at (1, controls the opening from passage binto the cushioning-chamber, and, as all the vapor generated must pass 3 5 this valve, it is thus enabled to shut oif all the burners of the stove in an instant.

From the cushioning-chamber the vapor is supplied through conduit E to the burner N of the generator itself, and also through duct 0 f to one of the non-generating burners, and through passage F and a second duct, f, to 'another non-generating burner.

In the conduit E is located the needle-valve G, controlling the generator-burner. It is tapered, as at g, and provided with the point g. The peculiar feature of this valve G is that it does not wholly shut off the vapor from the burner, although it stops nearly all of it, such peculiarity of action being 0b tained by so positioning the stop-nut g upon 'in dangerous quantities.

its stem as to insure contact by the nut with the end of the valve-cylinder g just before the valve can reach close contact with its seat. (See Fig. 6.) By rendering this valve unable to shut off the vapor entirely, and thus stop the burner, I prevent the leakage of oil through any of the non generator burner-valves should such valves be open and the attendant attempt to shut them off by merely closing the generator-valve. Such a mistake is possible with the old construction of stoves, and where it occurs the oil flows out at the non-generating burner-valves as soon as the stove becomes cold, and often In a stove, however, in which a generator burner-valve is adapted to shut off only the major part of the vapor the non-generator burners cannot be wholly put out of action by closing that valve alone, but instead they and the gener- 7o ator will continue to burn until the supply of oil is exhausted or the generation of vapor is absolutely stopped in some other way, the only evil attending this result being the mere waste of fuel; but the attendant is not likely to make this mistake with my improved valve, because she will at once see that the fire at the generator is not extinguished, but only reduced in size, by the simple closing of the generator-valve, and be instructed thereby that something more is necessary to put the stove entirely out of action.

The mixingrtube H and deflector-tube h are made in one piece of metal, or otherwise rigidly joined, and provided with a horizontal flange, 2'. Through this flange and the screws j both tubes are pivoted to the base-plate J of the generatonburner, one screw acting as a pivot and the other passing through the arc-slot Kin the base-plate and serving to 9 retain the parts in proper position, the motion thus permitted being a horizontal oscillation, limited by the length of the slot, and which serves to put either the mixing-tube or deflector-tube in line with the Orifice of valve G, depending upon whether the generator-burner is to be actively used or only kept hot for the generation of vapor.

K is the wire handle formoving these tubes. The base-plate is also cut away around the I00 upper end of the mixing-tube to permit the movement mentioned.

The base-plate has heretofore been continuous and extended over to the casting containing the cushioning-chamber and without any opening between the two. I find it useful, however, to provide an opening or' slot, L, through the plate and under the genera tor B, so that when the deflector-tube is in use the slight flame given off may have direct access to the generator.

The valves M, each of which controls one of the non-generating burners, are formed like the generator-valve G; but the stop-nuts m on their stems are set farther back, so the valves may effect an absolute stoppage of the vapor. The elongated straight needle-points upon these valves serve the same useful purpose as in the case 01": the generator-valve.

I clairn 1. In a vapor-stove, the combination of a generating-burner having a partially-closable regulating-Valve located in its vapor-passage from the generator of said burner with one or more non-generating burners, each fed from the generator by a separatevapor-passage and each having its own regulating valve or valves, substantially as set forth.

2. In a vapor-stove, the combination of a generating-burner having a partially-closable valve for regulating its own vapor supply, one or more non-generating burners supplied by a channel separate from that leading to the generating-burner, and a" shut-0E valve located in the passage from the generator, through which all the vapor flows and conmeeting with the passages feeding the several burners, substantially as specified.

3. In a generating-burner having a generator located at the side of and above its base-plate and a deflector-tube located under said base-plate, the combination of such generator base-plate and deflector-tube, said plate being provided with a slot or passage, L, giving direct access by the flame from the tube to the generator, substantially as specified.

J. BENNETT WALLACE. Witnesses: 1

JOHN W. MUNDAY, LEWIS E. CURTIS. 

